To provide a membrane breakage diagnostic method and apparatus of a membrane filter, in which the diagnostic of the membrane broken condition is easy to use and exact, and high in applicability even in case a shape of a hollow fiber membrane and a sealing volume sealing a pressurized gas are different without acquiring reference data in various conditions to judge the membrane breakage.
In a method of diagnosing the membrane broken condition from the change with time of the pressure in a high-pressure space after sealing by introducing a pressurization gas inside the hollow fiber membrane, and stopping the introduction of the pressurization gas when the previously set pressure is attained to seal the pressurized side, the change with time in the pressure of the high-pressure space in case of assuming the broken condition of the hollow fiber membrane on trial is asked by a calculation, and the comparison of an actual measurement of the change with time in the pressure with the operational value produces the diagnosis of the broken condition of the hollow fiber membrane.
KAWAMITSU AKINORI
FUKUDA MAKOTO
MOTOYAMA NOBUYUKI
| JPS56129003A | 1981-10-08 | |||
| JP2000279770A | 2000-10-10 | |||
| JP2000342936A | 2000-12-12 | |||
| JPH03110445A | 1991-05-10 |
Yoshihide Komada
Kiyoshi Matsuzaki